Article(id=1322942715738075486, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942707957641522, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200451, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1592928000000, receivedDateStr=2020-06-24, revisedDate=1607529600000, revisedDateStr=2020-12-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343722519, onlineDateStr=2026-10-30, pubDate=1629388800000, pubDateStr=2021-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343722519, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343722519, creator=13701087609, updateTime=1793343722519, updator=13701087609, issue=Issue{id=1322942707957641522, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='8', pageStart='1519', pageEnd='1784', issueExtLink='null', onlineDate='null', pubDate='1629388800000', pubDateStr='2021-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343720664, creator='13701087609', updateTime=1793345848275, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322951631859494962, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942707957641522, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322951631859494963, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942707957641522, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1683, endPage=1690, ext={EN=ArticleExt(id=1322942715956179295, articleId=1322942715738075486, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Behavior and Expanding Mechanism of MgO Expansive Agent at High Temperature and High Pressure, columnId=1319726165087077079, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Article, runingTitle=null, highlight=null, articleAbstract=

High-temperature high-pressure (HTHP) working conditions of oil-well cement paste alter the expansive mechanism of MgO expansive agent, thus significantly accelerating the expansion speed and increasing the ultimate expansion. The free expansion rate of shrinkage-compensating pastes with MgO expansive agent at different contents was investigated. The microstructural characteristics, including morphology and porosity, were evaluated to reveal the expansive mechanism of MgO expansive agent in HTHP environment. It is indicated that the shrinkage of oil-well cement paste can be compensated by admixing MgO expansive agent at proper contents and reactivity. At 150℃ and 20 MPa, S-type (220 s) MgO with a relatively low reactivity is recommended and its dosage is less than 4%. At HTHP, the migration of Mg2+ from MgO particles is accelerated. Besides the formation of expanding mircocracks, Mg(OH)2 crystals also are interlocked with tobermorite crystals as a hydration product of cement, thus enlarging their gap and causing an extraordinary expansion, compared to the expansive binder cured at normal temperature and pressure.

, authors=Gang SUN1, Fengze CAO2, Yibo LIAO1, Dan DAI1, Peiyu YAN2, authorsList=Gang SUN, Fengze CAO, Yibo LIAO, Dan DAI, Peiyu YAN, authorCompany=null, correspAuthors=Peiyu YAN, authorNote=

SUN Gang (1978-), male, Engineer. E-mail:

, correspAuthorsNote=
YAN Peiyu (1955-), male, Ph. D., Professor. E-mail:
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观察了不同MgO掺量的补偿收缩水泥浆在高温高压环境中的自由膨胀率,并结合显微形貌、浆体孔隙率等微观测试手段,分析了高温高压环境中MgO膨胀剂的作用机理。结果表明:掺加适量适当活性MgO膨胀剂,可以在对浆体强度影响不大的前提下有效补偿油井水泥浆在高温高压环境中的收缩;在150℃、20 MPa下,宜使用低活性的S型MgO膨胀剂,掺量应控制在3%左右;在高温、高压环境中,Mg2+的迁移速度更快,Mg(OH)2晶体的生长范围更广,体积更大;除扩张微裂缝外,Mg(OH)2晶体还与水泥水化产物雪硅钙石晶簇相互穿插,扩大水化产物间的距离,所产生的膨胀率远高于常温常压条件时的。

, authors=孙刚1, 曹丰泽2, 廖易波1, 代丹1, 阎培渝2, authorsList=孙刚, 曹丰泽, 廖易波, 代丹, 阎培渝, authorCompany=null, correspAuthors=阎培渝, authorNote=

孙刚(1978—),男,工程师。

, correspAuthorsNote=
阎培渝(1955—),男,博士,教授。
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高温高压环境中MgO膨胀剂的性能与作用机理
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孙刚 1 , 曹丰泽 2 , 廖易波 1 , 代丹 1 , 阎培渝 2
硅酸盐学报 | 研究论文 2021,49(8): 1683-1690
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硅酸盐学报 |研究论文 2021 , 49 (8) : 1683 -1690
高温高压环境中MgO膨胀剂的性能与作用机理
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100084, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322942719626195327, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1322942715738075486, authorId=1322942717868781948, language=CN, stringName=阎培渝, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=2, address=2.清华大学土木工程系,北京 100084, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322942716685988196, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1322942715738075486, xref=2., ext=[AuthorCompanyExt(id=1322942716694376805, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1322942715738075486, companyId=1322942716685988196, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.Department of Civil Engineering, 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孙刚1 , 曹丰泽2, 廖易波1, 代丹1, 阎培渝2
作者信息
  • 1.中海油田服务股份有限公司,河北 三河 065201
  • 2.清华大学土木工程系,北京 100084
通讯作者:
阎培渝(1955—),男,博士,教授。
作者简介:

孙刚(1978—),男,工程师。

Behavior and Expanding Mechanism of MgO Expansive Agent at High Temperature and High Pressure
Gang SUN1 , Fengze CAO2, Yibo LIAO1, Dan DAI1, Peiyu YAN2
Affiliations
  • 1.China Oilfield Services Limited, Sanhe 065201, Hebei, China
  • 2.Department of Civil Engineering, Tsinghua University, Beijing 100084, China
  • Corresponding Author:
    YAN Peiyu (1955-), male, Ph. D., Professor. E-mail:

    SUN Gang (1978-), male, Engineer. E-mail:

出版时间: 2021-08-20 doi: 10.14062/j.issn.0454-5648.20200451
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观察了不同MgO掺量的补偿收缩水泥浆在高温高压环境中的自由膨胀率,并结合显微形貌、浆体孔隙率等微观测试手段,分析了高温高压环境中MgO膨胀剂的作用机理。结果表明:掺加适量适当活性MgO膨胀剂,可以在对浆体强度影响不大的前提下有效补偿油井水泥浆在高温高压环境中的收缩;在150℃、20 MPa下,宜使用低活性的S型MgO膨胀剂,掺量应控制在3%左右;在高温、高压环境中,Mg2+的迁移速度更快,Mg(OH)2晶体的生长范围更广,体积更大;除扩张微裂缝外,Mg(OH)2晶体还与水泥水化产物雪硅钙石晶簇相互穿插,扩大水化产物间的距离,所产生的膨胀率远高于常温常压条件时的。

氧化镁  /  膨胀剂  /  油井水泥  /  高温高压环境  /  膨胀机理

High-temperature high-pressure (HTHP) working conditions of oil-well cement paste alter the expansive mechanism of MgO expansive agent, thus significantly accelerating the expansion speed and increasing the ultimate expansion. The free expansion rate of shrinkage-compensating pastes with MgO expansive agent at different contents was investigated. The microstructural characteristics, including morphology and porosity, were evaluated to reveal the expansive mechanism of MgO expansive agent in HTHP environment. It is indicated that the shrinkage of oil-well cement paste can be compensated by admixing MgO expansive agent at proper contents and reactivity. At 150℃ and 20 MPa, S-type (220 s) MgO with a relatively low reactivity is recommended and its dosage is less than 4%. At HTHP, the migration of Mg2+ from MgO particles is accelerated. Besides the formation of expanding mircocracks, Mg(OH)2 crystals also are interlocked with tobermorite crystals as a hydration product of cement, thus enlarging their gap and causing an extraordinary expansion, compared to the expansive binder cured at normal temperature and pressure.

magnesium oxide  /  expansive agent  /  oil-well cement  /  high-temperature-high-pressure environment  /  expanding mechanism
孙刚, 曹丰泽, 廖易波, 代丹, 阎培渝. 高温高压环境中MgO膨胀剂的性能与作用机理. 硅酸盐学报, 2021 , 49 (8) : 1683 -1690 . DOI: 10.14062/j.issn.0454-5648.20200451
Gang SUN, Fengze CAO, Yibo LIAO, Dan DAI, Peiyu YAN. Behavior and Expanding Mechanism of MgO Expansive Agent at High Temperature and High Pressure[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (8) : 1683 -1690 . DOI: 10.14062/j.issn.0454-5648.20200451
  • 国家自然科学基金项目(51678344; 51878381)
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2021年第49卷第8期
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doi: 10.14062/j.issn.0454-5648.20200451
  • 接收时间:2020-06-24
  • 首发时间:2026-10-30
  • 出版时间:2021-08-20
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  • 收稿日期:2020-06-24
  • 修回日期:2020-12-10
基金
国家自然科学基金项目(51678344; 51878381)
作者信息
    1.中海油田服务股份有限公司,河北 三河 065201
    2.清华大学土木工程系,北京 100084

通讯作者:

阎培渝(1955—),男,博士,教授。
参考文献
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2种不同金属材料的力学参数
科
Family
属数
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genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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